Karel DS200, Technical Reference And Installation Manual

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VIII. THE AUTO ATTENDANT AND VOICE MAIL
MODULE – EVM200L
Definition:
EVM200L is an integrated Auto Attendant and Voice Mail module for DS200 series
exchanges. Since it has been designed as an interface module, it can be installed in any
general-purpose slot of the system. At most 8 EVM200L modules can be employed in a
system of the DS200 series.
EVM200L has three main functions:
1) Automatic Call Distribution (ACD-Auto Attendant) (Message announcement in two
languages is possible.),
2) System Messages (Message announcement in two languages is optionally possible.),
3) Voice Mail Service
Technical Information:
The Auto Attendant allows the operator to work more efficiently, especially during busy hour
traffic, by guiding external calling parties through pre-recorded messages.
The system messages, on the other hand, inform extensions (users) through pre-recorded
messages about statuses of their telephones. By this way, extensions could always know
about features that are already active at their telephones.
Thanks to the voice mail service, extensions can have private message boxes to receive or
leave messages to each other.
In order to actualize all those functions, EVM200L has been equipped with memory elements
in different types.
FLASH ROM memories are employed as non-volatile memory elements for ACD and the
system messages, so that those messages are not cleared even when the system power is
cut off. The on-board memory capacity is 4 minutes for ACD messages and 2 minutes for the
system messages.
There are two expansion slots for optional EVM-FL cards in every EVM200L module. An
EVM-FL card, which has been installed in one of these slots, can be employed upon wish as
a two-minute FLASH ROM memory for ACD messages, or it can increase the system
message memory capacity by 2 minutes upon wish, in order to enable the use of a second
language for the system messages. However, the second EVM-FL card can be used to
increase the ACD message capacity only.
DRAM memories are used as volatile memory elements for the voice mail service. Messages
of that type are not saved in case of power failure. The on-board capacity for voice mail is 34
minutes. Each EVM200L module has four expansion slots for the optional EVM-DL cards. A
34-minute DRAM memory field is present on each EVM-DL card, in order to be used for
voice mail.
Each EVM200L has 8 voice channels in total, 4 for message recording and 4 for listening to
recorded messages. The 4 recording channels are used to record the ACD or system
messages, or they are used while recording messages that extensions are leaving to each
other. The 4 announcement channels, on the other hand, are used during announcement of
the ACD or system messages to users, or they are used by extensions to listen to messages
left for them.